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Direct Observation of Large-Scale Screw Dislocation Grids in Oxide Heteroepitaxies
Chen, Yuting1,2; Tang, Yunlong1; Gong, Fenghui1,2; Wu, Bo3,4; Han, Mengjiao3,4; Zou, Minjie3,4; Feng, Yanpeng3,4; Wang, Yujia1; Zhu, Yinlian1,3; Ma, Xiuliang1,5
Corresponding AuthorZhu, Yinlian(ylzhu@imr.ac.cn)
2022-03-09
Source PublicationNANO LETTERS
ISSN1530-6984
Volume22Issue:5Pages:2085-2093
AbstractScrew dislocation is important not only for understanding plastic deformation of crystals but also for optical and electrical properties of materials. However, characterizations of screw dislocations are still challenging since there is almost no atom distortion when viewed along the dislocation line. In particular, although it is theoretically known that shear strains in heteroepitaxy systems may be relaxed via screw dislocation grids, the specific structures and thickness-dependent evolutions of these grids are still largely unknown. Here, by using orthorhombic [001]-oriented DyScO3 substrates we have directly observed large-scale screw dislocation grids in the DyScO3/BiFeO3 oxide heteroepitaxies exhibiting large shear strain. Pure screw dislocations with a[100] and a[010] Burgers vectors were confirmed by multiscale transmission electron microscopy study. Our results directly confirm screw dislocation grids as a factor to tailor shear strains in epitaxial systems and suggest a practical platform for studying structures and induced responses corresponding to screw dislocations.
KeywordScrew dislocation grids twist boundaries oxide heteroepitaxies shear strain transmission electron microscopy
Funding OrganizationNational Natural Science Foundation of China ; Key Research Program of Frontier Sciences CAS ; Shenyang National Laboratory for Materials Science ; Scientific Instrument Developing Project of CAS ; Youth Innovation Promotion Association CAS ; China National Postdoctoral Program for Innovative Talents ; China Postdoctoral Science Foundation
DOI10.1021/acs.nanolett.2c00030
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51971223] ; National Natural Science Foundation of China[51922100] ; National Natural Science Foundation of China[52122101] ; Key Research Program of Frontier Sciences CAS[QYZDJSSW-JSC010] ; Shenyang National Laboratory for Materials Science[L2019R06] ; Shenyang National Laboratory for Materials Science[L2019R08] ; Shenyang National Laboratory for Materials Science[L2019F01] ; Shenyang National Laboratory for Materials Science[L2019F13] ; Scientific Instrument Developing Project of CAS[YJKYYQ20200066] ; Youth Innovation Promotion Association CAS[2021187] ; Youth Innovation Promotion Association CAS[Y202048] ; China National Postdoctoral Program for Innovative Talents[BX2021348] ; China Postdoctoral Science Foundation[2021M703455]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000795031700034
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174057
Collection中国科学院金属研究所
Corresponding AuthorZhu, Yinlian
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Songshan Lake Mat Lab, Bay Area Ctr Electron Microscopy, Dongguan 523808, Guangdong, Peoples R China
4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
5.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
Recommended Citation
GB/T 7714
Chen, Yuting,Tang, Yunlong,Gong, Fenghui,et al. Direct Observation of Large-Scale Screw Dislocation Grids in Oxide Heteroepitaxies[J]. NANO LETTERS,2022,22(5):2085-2093.
APA Chen, Yuting.,Tang, Yunlong.,Gong, Fenghui.,Wu, Bo.,Han, Mengjiao.,...&Ma, Xiuliang.(2022).Direct Observation of Large-Scale Screw Dislocation Grids in Oxide Heteroepitaxies.NANO LETTERS,22(5),2085-2093.
MLA Chen, Yuting,et al."Direct Observation of Large-Scale Screw Dislocation Grids in Oxide Heteroepitaxies".NANO LETTERS 22.5(2022):2085-2093.
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